The theme of this thesis is love, studied as one among the passions, and broached by Vieira with propriety in his sermons. Vieira follows the Aristotelian- Thomist ideas, believing that passion is good, once it is ruled by reason. The preacher discourses about remedies for love, about self-awareness as means to perceive love, about the contraposition between divine and human love, highlighting question of fine love, recognized by the confrontation between the fineness of the two loves; about the loving agreement, aiming to offer a definition of loving-feeling. The preacher associates these questions, in the quest of emphasizing that love is the linking tool between God and man, and that the latter is not an autonomous being, considering that his existence is firmly set on a loving relationship between man and Christ. To Vieira, self- knowledge depends on the admittance, by man, of his fragility and his dependence upon God.